Use the Henderson–Hasselbalch equation to calculate the pH of each solution:
A) a solution that contains 0.740% C5H5N by mass and 0.940% C5H5NHCl by mass
B) a solution that is 15.5 g of HF and 23.5 g of NaF in 125 mL of solution

CHECK THE CALCULATION PROCESS IS CORRECT Ka and Kb .VALUES I HAVE TAKEN FROM INTERNET.
Use the Henderson–Hasselbalch equation to calculate the pH of each solution: A) a solution that contains...